Alarm for linotype-machines.



No. 788,578. PATENTBD MAY 2, 1905. F. W. BLAIR. ALARM FOR LINOTYPE MACHINES.

APPLIOATIOH FILED MAY 17, 1904.

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A 9 g? I I 'I Httoegs PATENTED MAY 2, 1905.

P. w. BLAIR. ALARM. FOR LINOTYPE MACHINES.

APPLIOATION I'IL ED MAY 17. 1904.

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Witnesses UNITED STATES Patented May 2, 1905,

PATENT OFFICE.

FELTON BLAIR, OF SHENANDOAI-I', IOWA.

SPECIFICATION forming part of Letters Patent N 0. 788,578, dated May 2, 1905.

Application filed May 17, 1904:- Serial No. 208,462.

To alt whom it may concern:

Be it known that I, FEL'roN W. BLAIR, acitizen of the United States, residing at Shenandoah, in the county of Page and State of Iowa, have invented a new and useful Alarm for Linotype-Machines, of which the followingis a specification.

This invention relates to improvements in linotype-machines, and especially to those of the well known Mergenthaler type, which may be used to advantage in connection with any machine in which a line of type is cast at each operation.

In the ordinary form of linotype-machine a pump-stop lever is arranged in the path of movement of the pump-lever and if not moved therefrom at each operation will prevent movement of the pump-lever and the forcing of the type-metal to the vacancies, so that no line will be cast, and this fact will not be known to the operator unless careful watch is kept of this particular portion of the mechanism.

The object of the present invention is to provide means whereby on the failure of the pumping mechanism to operate theoperator will be instantly informed and may recast the line.

With this and other objects in view, as will more fully hereinafter appear, the invention consists in the novel construction and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that various changes in the form, proportions, size, and minor details of the structure may be made without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawings, Figure 1 is a plan view of suflicient of a linotype-machine to illustrate the invention. Fig. 2 is a side elevation of the same. Fig. 3 is a detail perspective View of the alarm attachment forming the subject of the present invention.

Similar characters of reference are employed to indicate corresponding parts throughout the several figures of the drawings.

The melting-pot A is mounted, as usual, on the lever B, that is actuated by a cam (J.

The pump-lever D is operated, as usual, bya cam E and spring F.

At a point to one side of the pump-lever is pivoted a bell-crank pump-stop G, that is connected by a rod H to a lever I, pivoted adjacent to the end portion of the vise and in position to be moved outward when the justifying operation is being accomplished, and at the completion of outwardmovement of said lever I the pump-stop Gr is moved from under the pump lever, so that the latter is allowed to operate and force type-metal to the mold. These portions of the Mergenthaler linotype-machine are well known to those skilled in the art, and further description is therefore unnecessary.

The pump-stop is operated upon by a small spring J, normally tending to move said stop to operative position, and this spring is held in place by a screw K. I

()n the screw K is secured the alarm attachment forming the subject of the present invention and comprising a vertically-disposed standard 1, to which is secured a hell or other alarm or signal 2, which may be of either visual or audible nature.

To the standard is pivoted an alarm-operating lever 4, the pivot-pin 5 extending through a suitable slot 7 on the lever to permit of the utmost freedom of movement. The outer end of the lever is provided with a cam 8, adapted to pass under the lug 9 on a clapper-rod 10, that is secured at its lower end to the standard and at its upper end is bent at right angles and guided through a suitable opening 11 in the upper portion of the standard, so that it is all times maintained in proper relative position with respect to the bell.

The lower end of the belloperating lever is disposed in the path of movement of the upper end of the cam-actuated lever 00, which is moved to throw the melting-pot forward, and likewise is in the path of movement of the pump-stop G, and unless it is moved toward the rear of the machine by the movement of the pump-stop it will be engaged on the upward and forward movement of the pot-lever and the cam will be forced under the lug on the clapper-rod, causing the sounding of the alarm-or signal.

' When all of the parts are in Working condition and a sufficient number of matrices have been placed in the clamp or vise to form a full line, the pump-stop G will be moved in the usual manner during the movement of the justifying mechanism, and in moving the pump-stop will engage the lower portion of the alarm-actuating lever and will force the latter rearward and out of the path of movement of the pot-lever, so that if everything is in working order the alarm will not be actuated.

Should the matrices in the clamp or vise not be suflicient in number to form a complete line, the justifying mechanism will move to its fullest extent; but the pump-stop will not be operated. The pot-lever, however, will be moved in the usual manner to present the lips of the pot to the mold-passages, and in effecting this operation said lever a: will engage the lower end of the bell-operating lever, and thus cause the sounding of the alarm or the display of a signal, which will instantly attract the attention of the operator.

Having thus described the invention, what is claimed is- 1. In mechanism of the class described, an

alarm having a movable member operable on movement of the pot toward the matrix, and a pump-stop adapted to engage said movable member and move the same to inoperative position.

2. In mechanism of the class described, a bell-supporting standard, a clapper spring having a projecting lug or finger, and a pivotally-mounted actuating-lever disposed in the path of movement of the pump-stop and movable to sound the alarm when the pump-stop remains in locking position.

3. In mechanism of the class described, a short-line alarm including a supporting-standard, 'a bell carried thereby, a spring-clapper secured at its lower end to the standard and having its upper end passing through a guiding-openi ng therein, a lug or finger projecting from the clapper, and a slotted lever mounted pivotally on the standard, said lever having a cam-shaped end projection for engaging the lug or finger.

In testimony that I claim the foregoing as my own I have hereto aflixed my signature in the presence of two witnesses.

FELTON W. BLAIR.

Witnesses:

U. G. REININGER, JULIA HOLLEMBALK. 

